How To Perform Peptide-Protein Docking

Hi, could anybody give me an example about how to perform peptide-protein docking: the software and steps?
Here is my problem:
(1) a peptide about 10 amino acids
(2) target protein (an enzyme with known PDB structure file, and known active sites)
(3) how to find the most reliable binding site and the complex structure? (also need result like free energy)
Thank you!!!